<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
  <style>
    div{
      width: 500px;
      height: 100px;
      background-color: blue;
      margin: 0 auto;
      overflow: auto;
    }
    div::-webkit-scrollbar-track{
      background-color: orange;
    }
  </style>
</head>
<body>
<div>mee hic laborum non.iciis quod tempora ullam! Alias, aperiam asperiores beatae corporis deleniti earum eligendi error itaque iure laudantium neque nihil odit perferendis quaerat quas quibusdam ratione rem sint sit, temporibus voluptate, voluptatem voluptatibus! Fugiat id modi pariatur sit.</div>
<!--<div>Lorem ipsum dolor sit amet, consectetur adipisicing elit. Ab, ipsa?</div>-->
</body>
</html>